Last week the 1969 Chevy Camaro ZL1 COPO just barely won out over the 1969 Ford Mustang Boss 429 in a battle of two ultra-rare factory muscle cars . However, it became clear in our public poll that most of you prefered the Mustang. Can’t say we disagree, but it goes to show that we don’t always know how these things are going to turn out.

We’re keeping things old-school this week (can you tell it’s not auto show season?) with a pair of very desirable, fly-weight exotics from the early 1970s. The Porsche 911 2.7 RS is to Porsche collectors what a bug zapper is to mosquitos, except without the whole death by electrocution thing. The lovely Ferrari Dino 246 GTS, on the other hand, was relatively underappreciated in the pantheon of classic Ferrari up until just a few years ago. That’s not the case anymore.

Let’s find out which one should land in your garage.

LOOKS: Early 911s have a beautiful and delicate look about them. Even with the racier bodywork and go-fast stripes, the 2.7 RS preserves that look. It’s Porsche perfection.

LOOKS: The ‘S’ in ‘GTS’ stands for Spyder, meaning the one pictured here is one of the rare targa-top 246s. The Dino 246 is possibly one of the prettiest Ferraris ever, which puts it in the running for prettiest car ever.

LOOKS: You can go wrong with either, but the 246 is both better looking and more unique.

The Porsche 911 2.7 RS: 0

Ferrari Dino 246 GTS: 1

ENGINE: Like so many valuable vintage Porsches, the 2.7 RS was built as a homologation special. At the time, Porsche marketing wasn’t convinced the company could sell the required 500 units, but it did just that and then some. The race-derived 2,687 cc SOHC air-cooled horizontally opposed six-cylinder produces a healthy 210 horsepower.

ENGINE: Named for Enzo Ferrari’s deceased son, Dino was a short-lived Ferrari sub-brand. The 246 wasn’t built as a race car, but the 2,418 cc DOHC V-6 engine was first used in Fiat and Ferrari race cars. The punchy unit produces 195 horsepower.

ENGINE: In cars as light as these two, 15-horsepower can make a big difference.

The Porsche 911 2.7 RS: 1

Ferrari Dino 246 GTS: 1

PERFORMANCE: Thanks to its low mass, the 911 2.7 RS can accelerate to 60 mph in less than six seconds, which is pretty respectable even today. It’s race-bred chassis is also extraordinarily communicative to the driver. Porsche luddites still say it’s the best 911 ever. We won’t disagree.

PERFORMANCE: Believe it or not, the Dino (originally the 206) was Ferrari’s first ever mid-engine road car, making it the progenitor of the countless mid-engine Ferraris since. Similar to the Porsche, it’s a capable handler and scrambles to 60 mph in under six seconds.

PERFORMANCE: Porsche luddites be damned. This one is a draw.

The Porsche 911 2.7 RS: 2

Ferrari Dino 246 GTS: 2

COLLECTABILITY: As mentioned before, Porsche was easily able to surpass the 500 units required to go racing, and even ended up doing two more production runs. Despite that, it’s still an exceedingly sought-after car. The yellow example picture was recently auctioned by RM Sotheby’s for a staggering $918,500.

COLLECTABILITY: With 3,761 examples built, the 246 was a mass-production Ferrari, even by today’s standards. These things were selling for as little as $30,000 in the mid-1990, but RM Sotheby’s recently sold this green example for $396,600.

COLLECTABILITY: The Dino 246 is rapidly trending up in value, but the 2.7 RS isn’t going to start depreciating any time soon — if ever.

The Porsche 911 2.7 RS: 3

Ferrari Dino 246 GTS: 2

Dino 246s aren’t the well-kept secret they once were, but the Porsche is still the better long-term investment.

Porsche 911 2.7 RS image credit: Patrick Ernzen ©2015 Courtesy of RM Sotheby's

Ferrari Dino 246 GTS image credit: Robin Adams ©2015 Courtesy of RM Sotheby's